“In this situation at Wally World how about not scanning a few
purchases. “
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In my neck of the woods, I don’t know how they know you haven’t scanned stuff, though they know.
On two separate occasions as different Walmart stores (pre-COVID), I saw shoppers being stopped by store security for having items in their bags which were not scanned. Not sure about the contents of one of the shoppers; the other had meats they had not scanned.
Security did not look amused and I don’t think they were going to let it just go away.
The cameras use a software tool that looks for items not scanned.